Collect Stats that impact our software business

James whittakar is a quite respectable name in the software testing world; I came across his article about agile testing, in this article, he emphasized on some valuable data.i am writting brief description of his point of view.

We used to compile different status report during our testing phases like, number of test cases executed, number of test cases failed or passes etc. theses status reports are quite important for QA managers or project managers, to decide various thing like release time etc but these status reports do not reflect the impact on business that we are facing due to bugs found during testing cycle.So one type of data that would be of value is direct business impact statistics like:

This type of information is like gold to decision-makers. Brief description of the defect density and containment is given below

Defect Density: Information that shows number of bugs in the context of the size of the particular project module or phase. For example, if a requirements spec for a particular project is 120 pages, and 52 defects were collected relating to this spec, then the Defect Density is 0.43/pg. Similarly, you can measure Defect Density per kilo line of code or per object or module design.

Containment: This measures the success of preventing errors from propagating. As we all know, the earlier a bug is identified, the lower the cost of fixing it. Measuring containment, therefore, can tell us where we can save money and time.

I have been in software industry for almost 8 years, I got the opportunity of developing web/desktop applications in start of my career mainly based on Microsoft framework,I have also worked in Enterprise Business applications in Micrsoft biztalk server , I have keen interest in the field of Software quality and automation.I enjoy Session based testing/Explorator testing a lot.
I believe that software quality is one of the integral part of the software development, that demands good coding practices, timely reviews and verification right from the beginning. One can not 'paint' quality over the product after its development.